n = int(input())
if n <= 599:
    print('8')
elif n <= 799:
    print('7')
elif n <= 999:
    print('6')
elif n <= 1199:
    print('5')
elif n <= 1399:
    print('4')
elif n <= 1599:
    print('3')
elif n <= 1799:
    print('2')
else:
    print('1') n = int(input()) n int(input()) int input() input if n <= 599:
    print('8')
elif n <= 799:
    print('7')
elif n <= 999:
    print('6')
elif n <= 1199:
    print('5')
elif n <= 1399:
    print('4')
elif n <= 1599:
    print('3')
elif n <= 1799:
    print('2')
else:
    print('1') n <= 599 n 599 print('8') print '8' elif n <= 799:
    print('7') n <= 799 n 799 print('7') print '7' elif n <= 999:
    print('6') n <= 999 n 999 print('6') print '6' elif n <= 1199:
    print('5') n <= 1199 n 1199 print('5') print '5' elif n <= 1399:
    print('4') n <= 1399 n 1399 print('4') print '4' elif n <= 1599:
    print('3') n <= 1599 n 1599 print('3') print '3' elif n <= 1799:
    print('2') n <= 1799 n 1799 print('2') print '2' print('1') print '1' n = int(input()) int(input()) n
n = int(input())
if n <= 599:
    print('8')
elif n <= 799:
    print('7')
elif n <= 999:
    print('6')
elif n <= 1199:
    print('5')
elif n <= 1399:
    print('4')
elif n <= 1599:
    print('3')
elif n <= 1799:
    print('2')
else:
    print('1')